TOA Electronics SR-PP4, SR-S4S, SR-EP4 User Manual

OPERATING INSTRUCTIONS

LINE ARRAY SPEAKERS

EXTENSION PLATE

(optional)

PROTECTION PAD (optional)

SR-S4L SR-S4S

SR-EP4

SR-PP4

SR-S4L

SR-S4S

Thank you for purchasing TOA's Line Array Speakers and their associated products. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

TABLE OF CONTENTS

1. SAFETY PRECAUTIONS ............................................................................................ 3

2. GENERAL DESCRIPTION .......................................................................................... 5

3. FEATURES ...................................................................................................................... 5

4. COVERAGE AREA ....................................................................................................... 6

5. DIMENSIONAL DIAGRAM

5.1. Line Array Speaker SR-S4L ......................................................................................... 7

5.2. Line Array Speaker SR-S4S ........................................................................................ 7

6. SINGLE-AMPLIFIER DRIVE AND BI-AMPLIFIER DRIVE ............................... 8

7. INTERNAL WIRING DIAGRAM ................................................................................ 8

8. CHANGING TO HIGH IMPEDANCE ........................................................................ 9

9. JOINING SPEAKERS ................................................................................................. 10

10. ATTACHING THE PROTECTION PAD TO THE SPEAKER EDGE ............. 11

11. CHANGING SINGLE-AMPLIFIER DRIVE TO BI-AMPLIFIER DRIVE SYSTEM

...................................................................... 12

12. INTERNAL WIRING DIAGRAM FOR THE BI-AMPLIFIER DRIVE SYSTEM

......................................................... 13

13. DIGITAL PROCESSOR FILTERING

13.1. Single-Amplifier Drive (Factory-Setting) .................................................................... 14

13.2. Bi-Amplifier Drive ...................................................................................................... 14

14. SPECIFICATIONS

14.1. Line Array Speaker SR-S4L, SR-S4S ...................................................................... 15

14.2. Extension Plate SR-EP4 (optional) .......................................................................... 16

14.3. Protection Pad SR-PP4 (optional) ............................................................................ 16

1. SAFETY PRECAUTIONS

• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation.

• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions regarding safety.

• After reading, keep this manual handy for future reference.

Safety Symbol and Message Conventions

Safety symbols and messages described below are used in this manual to prevent bodily injury and property damage which could result from mishandling. Before operating your product, read this manual first and understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.

Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

WARNING

When Installing the Unit

• Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface. Doing so may result in the unit falling down and causing personal injury and/or property damage.

• Refer all installation work to the dealer from whom the speaker was purchased. Installation requires extensive technical knowledge and experience. The speaker may fall off if incorrectly installed, resulting in possible personal injury.

• Flying Precautions

Be sure to follow the instructions below. Otherwise, the suspension wires or belts may be off or snap and the speaker may fall off, causing personal injury.

· Check to confirm that the suspension wires and belts are strong enough to withstand the speaker load.

· The connectors of the suspension wires and belts must be securely linked with those of the speaker.

· All parts and components (such as enclosures, metal pieces, and screws) must be free from any

deformation, crack, and corrosion.

· Be sure to use screws supplied with the optional flying hardware when installing the speaker using such

hardware.

• Install the unit only in a location that can structurally support the weight of the unit and the mounting bracket. Doing otherwise may result in the unit falling down and causing personal injury and/or property damage.

• Owing to the unit's size and weight, be sure that at least two persons are available to install the unit. Failure to do so could result in personal injury.

• Do not use other methods than specified to install the speaker. Extreme force is applied to the unit and the unit could fall off, possibly resulting in personal injuries.

• Use nuts and bolts that are appropriate for the ceiling's or wall's structure and composition. Failure to do so may cause the speaker to fall, resulting in material damage and possible personal injury.

• Tighten each nut and bolt securely. Ensure that the bracket has no loose joints after installation to prevent accidents that could result in personal injury.

• Use the specified mounting bracket in combination. Doing otherwise may cause the unit or component to fall off, resulting in personal injury.

• Do not mount the unit in locations exposed to constant vibration. The mounting bracket can be damaged by excessive vibration, potentially causing the unit to fall, which could result in personal injury.

When Installing the Unit

• Avoid placing the unit in a doorway or other high traffic area as people may trip on the equipment and cords, or be injured by falling objects.

• Avoid touching the unit's sharp metal edge to prevent injury.

• When installing the speaker at head height, attach the optional SR-PP4 Protection Pad to the bottom of the speaker. Failure to do so may cause injury if people hit their heads directly against the speaker.

When the Unit is in Use

• Do not operate the unit for an extended period of time with the sound distorting. This is an indication of a malfunction, which in turn can cause heat to generate and result in a fire.

• Do not stand or sit on, nor hang down from the unit as this may cause it to fall down or drop, resulting in personal injury and/or property damage.

• Have the unit checked periodically by the shop from where it was purchased. Failure to do so may result in corrosion or damage to the unit or its mounting bracket that could cause the unit to fall, possibly causing personal injury.

Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage.

CAUTION

2. GENERAL DESCRIPTION

Featuring slim construction, the SR-S4 series are 2-way line array speakers containing 32 speaker elements. The sound source speaker elements are vertically arranged in close proximity to each other, and form a continuous linear sound source, achieving uniform sound pressure with less attenuation due to distance. The SR-S4L speaker is of a linear design which is ideal for long distance sound transmission applications, while the SR-S4S features a curved line having a 10° vertical coverage area, and is designed to cover relatively short distance applications. It is also possible to combine both the linear and curved line types to configure an array that continuously covers applications ranging from short to long distances.

3. FEATURES

• The SR-S4 series is a 2-way line array speaker having eight 10 cm woofers for low-frequency output, and 24 small tweeters for high-frequency sound output. Both the woofers and tweeters are arranged in the front and rear on the same axis, providing a symmetrical, uniform coverage area.

• Since the linear sound source effect prevents energy from attenuating even at longer distances, the line array speaker compares favorably with normal types of speakers in its ability to project sound long distances. This realizes less difference in sound volume between areas close and far from the speaker, for a more uniform sound field.

• Since the speaker's vertical sound dispersion is suppressed, sound is only directed at the target area. The speaker's construction is not influenced by sound reflection from ceiling or floor surfaces, and can provide clear sounds even in spaces affected by long reverberation times or other poor acoustic conditions.

• Since the attenuation of sound pressure is small even far away from the speaker, the volume is not excessively loud in the area near the speaker. This helps suppress feedback (improving safety amplification gain).

• By joining 2 or 3 speakers, a longer sound source can be configured, making it possible to project sound output farther and at larger volumes.

• The speaker has a built-in network circuit for a single amplifier drive. Changing the internal connector position enables bi-amplifier drive that provides a higher quality sound output.

• The use of optional mounting brackets* permits the speaker to be installed in the most appropriate position for its intended use. (Details of the installation procedures are described in the installation manual enclosed with each bracket.)

* SR-WB4 Wall mounting bracket, SR-TB4 Wall tilt bracket, SR-FB4 Flying bracket, SR-SA4 Stand adapter,

and SR-FS4 Floor stand.

• The speaker can be used for high-impedance applications with the additional use of the optional MT-S0601 Matching transformer. (Single-amplifier drive only)

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